[国外标准] SAE AMS 4147D-2007 Aluminum Alloy Forgings 5.6Zn - 2.5Mg - 1.6Cu - 0.23Cr (7075-T7352) Solution Heat
[国外标准] BS 4147-1980 Specification for bitumen-based hot-applied coating materials for protecting iron and s
[轻工行业标准] QB/T 4147-2019 驱蚊花露水
[轻工行业标准] QB/T 4147-2010 驱蚊花露水
[化工行业标准] HG/T 4147-2010 工业用二正丙胺